On Fri, Apr 2, 2021 at 1:50 AM heng zhang via Gcc-help <gcc-help@xxxxxxxxxxx> wrote: > Why is the executed time of the 8th line performed 1* and what does the > symbol ‘*' means? According to the explanation of the official web, > executed basic blocks having a statement with zero execution_count end with > ‘*’ character. For this case, there is not any unexecuted statement in for > loop. When the 11th line is pruned, the executed time of the 8th line is > only 1. so is it a bug? The line 12 1*: 8: for(int i=0;i<2;i++) is effectively more than one piece of code. One of those pieces of code wasn't executed. If you put a newline after every ; and rerun gcov, the results may make more sense. But exactly attributing counts for some complex statements like a for loop header is tricky, so it may always be a little misleading. Better is to just use the counts of the statements inside the block and not worry about the for loop header. Jim
